Jul 20, 2023

Fast, scalable, and memory-efficient allocator for MP

The Hoard memory allocator is a fast, scalable, and memory-efficient memory allocator for shared-memory multiprocessors.

Multithreaded programs that perform dynamic memory allocation do not scale because the heap is a bottleneck. When multiple threads simultaneously allocate or deallocate memory from the heap, they will be serialized while waiting for the heap lock. Programs making intensive use of the heap actually slow down as the number of processors increases. Note If you make a lot of use of the STL, you may not know it, but you are making a lot of use of the heap.

Hoard is a fast allocator that solves this problem. In addition, it has very reasonable bounds on memory consumption.

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